ESP32 Using Arduino Cloud
The code for the ESP32 using the DHT11, DHT20, or DHT22 is identical to the Arduino example in the previous chapter. You just need to…
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Photoresistor Sensor
A photoresistor (also known as a light-dependent resistor or LDR) is a type of resistor whose resistance decreases as the intensity of light hitting the…
Voltage Divider Circuit
Voltage Divider Explanation A voltage divider is a simple circuit made of two resistors connected in series. It is used to scale down a voltage…
Project – Smart Sunrise Alarm
In this project, we’re going to design a smart sunrise alarm that uses a light-dependent resistor (LDR) and an active buzzer. This clever alarm will…
LED Control Panel
We have learned how to display dynamic information using a Web Server. In this project, we will take it a step further by enabling interaction…
MultiWiFi
MultiWifi is a feature or technique used to allow the ESP32 to connect to multiple Wi-Fi networks. The idea is that the device can automatically…
NTC Temperature Sensor
An NTC (Negative Temperature Coefficient) sensor is a type of temperature sensor whose resistance decreases as the temperature increases. This behavior is the opposite of…
Project – Temperature Measurement
To use an NTC thermistor with the ESP32, you need to connect it in a voltage divider configuration. Here’s how you can do it: Components…
Project – IoT Real-Time Dashboard
In this project, we’ll build an IoT project that display real-time temperature and humidity data from the DHT22 sensor using an ESP32. The ESP32 is…